Focus is not sharp enough in your floral images, either because of subject motion, camera motion, and/or a too narrow depth of field. While photographing and editing floral images can be fun and good practice, there are already many millions of flowers in the Adobe Stock databases, so the likelihood that you'll ever sell one is quite remote.
Noting ventured; nothing gained.
Adobe Stock customers expect the highest visual and technical quality for use in commercial projects. Read these links.
Examine your images at 100-300% magnification.
The focus is too soft. Edges look fury, not sharply defined.
If I tried to use this image on a commercial T-shirt for example, it would be a mess of bleeding edges and not very attractive when printed.
Also I agree with @Jill_C regarding the sales potential of plants & flowers. The competition in this category is enormous. You'll be lucky to get many views much sell anything.
The blurred background is a bit disturbing. There is not enough contrast between the subject and that blur. Also there is evidence of shake.
I love the second photo. It is really a nice banana blossom. The problem is that it has a blue color cast. You need to fix that white balance issue.
The third photo is underexposed and noisy.
The fourth photo does not have enough contrast. I is not well focused and also has shakes.
To avoid shake you need to do one of or both of two things, use a tripod and use high shutter speed.